PMID- 23758552
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20140422
LR  - 20130716
IS  - 1520-6882 (Electronic)
IS  - 0003-2700 (Linking)
VI  - 85
IP  - 14
DP  - 2013 Jul 16
TI  - Chemical bonding approach for fabrication of hybrid magnetic metal-organic 
      framework-5: high efficient adsorbents for magnetic enrichment of trace analytes.
PG  - 6885-93
LID - 10.1021/ac4011364 [doi]
AB  - A facile and efficient strategy about the synthesis of a novel kind of hybrid 
      magnetic metal-organic framework (MOF)-5 via chemical bonding assembly was 
      reported. The covalent bonding established between the amino functionalized Fe3O4 
      nanoparticles and the surface of the metal organic framework improved the 
      chemical stability and structure uniformity of the hybrid microcrystals. 
      Combination of MOF-5 with Fe3O4 nanoparticles allows for facile withdrawal of the 
      porous materials by magnetic decantation. The powder X-ray diffraction patterns 
      of the hybrid magnetic MOF-5 showed the structure of the metal organic framework 
      was not disturbed with the decoration of magnetic nanoparticles. The 
      as-synthesized materials combine the favorable attributes of both magnetic 
      characteristics of Fe3O4 nanoparticles and high porosity of metal organic 
      framework, making them excellent candidates as adsorbents for magnetic enrichment 
      of trace analytes. Their potential applications were explored by preconcentrating 
      polycyclic aromatic hydrocarbons and gibberellic acids from environmental, food, 
      and plant samples prior to gas chromatography-mass spectrometry (GC/MS) and 
      liquid chromatography-tandem mass spectrometry (LC-MS/MS), respectively. The 
      results showed that the magnetic MOF-5 exhibited superior enrichment capacity for 
      both of these nonpolar and polar analytes. The method demonstrated good precision 
      (relative standard deviations (RSDs) of 1.7-9.7%), low detection limits 
      (0.91-1.96 ng.L(-1) for polycyclic aromatic hydrocarbons and 0.006-0.08 mug L(-1) 
      for gibberellic acid), and good linearity (correlation coefficients higher than 
      0.9949). The RSDs of batch-to-batch extraction were 2.9-11.2%. The magnetic MOF-5 
      was robust enough for repeatable use without damage of extraction performance.
FAU - Hu, Yuling
AU  - Hu Y
AD  - School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 
      China. ceshyl@mail.sysu.edu.cn
FAU - Huang, Zelin
AU  - Huang Z
FAU - Liao, Jia
AU  - Liao J
FAU - Li, Gongke
AU  - Li G
LA  - eng
PT  - Journal Article
DEP - 20130628
PL  - United States
TA  - Anal Chem
JT  - Analytical chemistry
JID - 0370536
EDAT- 2013/06/14 06:00
MHDA- 2013/06/14 06:01
CRDT- 2013/06/14 06:00
PHST- 2013/06/14 06:00 [entrez]
PHST- 2013/06/14 06:00 [pubmed]
PHST- 2013/06/14 06:01 [medline]
AID - 10.1021/ac4011364 [doi]
PST - ppublish
SO  - Anal Chem. 2013 Jul 16;85(14):6885-93. doi: 10.1021/ac4011364. Epub 2013 Jun 28.